Interface IBlend<T, F>

Uses given op function to blend / composite pixels of this buffer with those of dest and writes results into dest. Supports same options as blit().

Returns true if all pixels in the buffer are likely to be already using pre-multiplied alpha, i.e. if all channel values of a pixel are less than or equal to that pixel's alpha value.

Postmultiplies alpha of all pixels (requires a pixel format with alpha channel).

Remarks

Usually called after the final compositing/blending step. See IBlend.premultiply for reverse operation.

Premultiplies alpha of all pixels (requires a pixel format with alpha channel).

Remarks

Usually called before starting a compositing/blending process. See IBlend.postmultiply for reverse operation.